Well, I realized what's the point of disabling an item if there isn't anything that will enable it at some point, conditions are the ones that are controlling the property. If you want the item to be totally disabled, make a scenario which can never be possible,
Example {Math=4>7;}, we all know that 4 can never be greater than 7 so the item will forever be disabled.
But if you have something like {Math=<ProcessorCores> > 2;}, then the item will only be enabled if processor has more than 2 cores therefore there will be times when the item will be enabled.